IV. The date of the prophecy. Isaiah prophesied in the days of Uzziah, Jotham, Ahaz, and Hezekiah. By this it appears, 1. That he prophesied long, especially if (as the Jews say) he was at last put to death by Manasseh, to a cruel death, being sawn asunder, to which some suppose the apostle refers, Heb. xi. 37. From the year that king Uzziah died (ch. vi. 1) to Hezekiah's sickness and recovery was forty-seven years; how much before, and after, he prophesied, is not certain; some reckon sixty, others eighty years in all. It was an honour to him, and a happiness to his country, that he was continued so long in his usefulness; and we must suppose both that he began young and that he held out to old age; for the prophets were not tied, as the priests were, to a certain age, for the beginning or ending of their administration. 2. That he passed through variety of times. Jotham was a good king, and Hezekiah a better, and no doubt gave encouragement to and took advice from this prophet, were patrons to him, and he a privy-counsellor to them; but between them, and when Isaiah was in the prime of his time, the reign of Ahaz was very profane and wicked; then, no doubt, he was frowned upon at court, and, it is likely, forced to abscond. Good men and good ministers must expect bad times in this world, and prepare for them. Then religion was run down to such a degree that the doors of the house of the Lord were shut up and idolatrous altars were erected in every corner of Jerusalem; and Isaiah, with all his divine eloquence and messages immediately from God himself, could not help it. The best men, the best ministers, cannot do the good they would do in the world.